Posts tagged planets
Is it possible (for humans)? My main concern was heavy gravity because they are much bigger and heavier. But it appears that in our system, the gas giants (but not Jupiter) all have a similar surf...
I'm trying to devise a planet where the atmosphere can sustainably combust in certain conditions. However, this planet must be able to support human life when the atmosphere is not undergoing a com...
If there was to be a habitable planet, similar to earth, but with varying gravity at different points on its surface - lets pretend that it varies from .8g to 1.2g - what sort of terrain or form wo...
Essentially, two stars of identical mass but different temperatures are in a binary system. One planet is directly in their barycenter, tidally locked to one and therefore both stars. The effect I'...
Summary version: So we're talking people living on top of 30 miles of topsoil, fake dino fossils and water on the outer surface on a hollow (but sturdy) unobtanium sphere with a radius about 1 AU....
How stable (or possible) would binary moons be, (Luna-sized or possibly slightly smaller) rotating around an earth-sized planet? Edit: Thanks for the questions! And thanks for the welcome! My...
Suppose we have a rocky planet (somewhere between Earth- and Super-Earth- sized) orbiting a star far enough away that it would be around Pluto's temperature if sunlight was the only heat source. If...
I have a sailing ship. It leaves port. As it goes away, it grows smaller and smaller. In our world, it eventually is hidden by the curvature of the Earth, such that the top mast stays visible longe...
I want to build a world with inhabitants living in a constant twilight zone, although the planet itself should still be rotating and not be tidally locked with the sun. Optimally I'd want it to be ...
Consider a dual-star system, with the distances between S (larger star) and J (smaller star) similar to Sun"“Jupiter. A planet P rotates around J on a 90-degree ecliptic and is Earth-like otherwise...
Earth is destroyed in explosive fashion by an unknown force. How does this affect the rest of the Solar System? Does sudden absence of that mass affect the orbits of the other planets at all? Let's...
On Earth, tides generally tie to a 12 or 24 hour cycle depending on the location. The exact times and heights are generally based on the shape of the sea, and the positions of the moon and sun. W...
I've posted a previous question similar to this in the way that it is of my WIP web-comic. The planet my friend and I have designed is strange as she wanted to create either a permanently dark plan...
I have an idea for a planet that orbits two stars. These starsslowly orbit each other, have equivalent masses/sizes, and while one is slightly red, the other is slightly blue. When I talk about the...
The Idea: A planetary system composed of many interconnected nodes and small bodies in a semi-stable arrangement, with much shorter distances between astronomical bodies than our own Solar System. ...
I have two binary pairs of planets in a planetary system. All of the planets are habitable, and similar in mass and composition to earth. Each pair is identical, or nearly so. The planets are tidal...
Would it be possible for a planet-wide climate be set so that the temperature even at the poles would continually stay within a narrow range between 17 and 21 degrees Celsius? (This is approximate...
The host star has a mass of 0.90 M$_\odot$ I'll refer to this star as Helios. I'll refer to the planets as Helios One, Helios Two, etc. Helios One is 0.55 M$_{\oplus}$ and orbits at 0.75 AU. It's ...
Specifically trying to create an alien species that can survive most environmental stressors and find a way to create an environment that justifies the species developing its characteristics that a...
Suppose there's a planet that has similar characteristics of Earth and can provide life, suddenly shatters in many pieces and scattered over the system. A small but very dense object is attached in...
Linked: What would conditions on a methane world be like? Question: As mentioned in the linked question, Titan is the second most likely world in the Solar System to harbor life. One of the answ...
Is there a way for a moon to usually appear relatively similar to our own moon, but occasionally appear much larger from the planet's surface without causing natural disasters due to extreme gravit...
What are some possible ways this could happen?
Lets say there's a super earth orbiting the sun at 3.00 AU, how thick would its atmosphere have to be to trap enough heat to make the planet warm enough for liquid water to flow on its surface?
Somewhat inspired by this question : Could a civilization as advanced as humans exist on a planet/dwarf planet like Pluto? Assume two dwarf planets in tide lock orbit around one-another. Assume ...
Could a terrestrial planet have a stable set of layers of atmospheres, and could different lifeforms evolve within those different layers? This question is inspired by the diversity found on Earth...
I am looking to have a Tunnel drilled through a world and deal with the physics of What happens in the centre of a planet, what happens with the heat at the core and whether it is faster to travel ...
In A World Out of Time, per Schlock Mercenary, Earth is moved to a new home by lighting a fusion candle. The fusion candle idea is discussed in the Schlock quote: Building a gas-giant colony s...
The situation is bad, human kind have waited to the last minute (literally) with building the huge ship that is supposed to save man kind. The sun goes nova, nothing can stop that but the ship has ...
I've heard a lot of people say that having two tidally locked planets close together would have adverse affects on both planets. I have two tidally locked planets at a distance of 16,550 miles apar...
I have two earth clones, in essence, separated by 16550 miles (26350 kilometers). They are, of course, tidally locked, and orbit each other once every 24 hours. These planets orbit a sun identical ...
As you might know, most planets that have atmospheres are not the ideal temperature to live on. For example, Venus is a very, very, very hot planet with constant volcanic eruptions and especially t...
I have two binary planets, with technological level of about the present day. They've developed communication between the two planets, and scientists are trying to develop a method of getting peopl...
Let there be an earth-sized planet with a rotational period of just over 3 hours and 38 minutes described by David Hammen here . On this oblate spheroid, with nights lasting for an hour and 49ish m...
Imagine a terrestrial planet extremely close to its star (assume it's identical to the Sun to make this simpler), maybe a bit like Kepler-78b but with an orbit of only about a week, for the purpose...
From Earth, we can detect extrasolar planets by a number of methods; primary are detecting the wobble in a star's motion caused by a large orbiting planet, and the dimming of the star's light as th...
EDIT: Question has been altered significantly in terms of design (originally having been a 'what-if'). This should (hopefully) accommodate more grounded and specific answers. Science often prefers...
I have decided to change the numbers to make it easy on Hohmannfan. These two planets, for all intents and purposes, are identical to Earth, with he moon replaced by another Earth. So now the quest...
So, I have five habitable planets in my planetary system. These five planets are all in the Goldilocks zone, orbiting their star. However, only two are relevant to this question. The star is exactl...
My NASA-like scientists in a system far, far away, but otherwise similar to us today, understand that their nearest sister planet, Sunev, is habitable for mankind. With one exception: it is almost...
So I have a fictional world where I have three moons orbiting this planet. I've used this web site to try and figure this out but I wanted to ask this question myself. My planet (a little bigger t...
I have a planet with a stellar flux of 1.118, an albedo between Earth's and Mars's, an atmosphere composition of 18% oxygen, 13% argon and 69% nitrogen with a sea-land pressure of 0.87 atmospheres ...
Because Boron is directly to the left of Carbon and Nitrogen is directly to the right of Carbon on the Periodic Table Boron-Nitride has the same types of bonds and so as carbon and so in combinatio...
Would it theoretically be possible for a solar eclipse to occur within a few days or even a few hours after a total lunar eclipse? The star, moon, and planet from which the event is being observed...
For this scenario, we must look at the postercard of the term "superearth"--Kepler-10b. Its mass is almost 3.5 times greater than Earth, and its diameter 1.4 times wider. Now let's imagine that...
A neutron star is a type of compact star that can result from the gravitational collapse of a massive star after a supernova. Neutron stars are the densest and smallest stars known to exist in t...
In this alternate universe, we still have the gas giants of Jupiter, Saturn, Uranus and Neptune. However, each planet has its mass increased $3.5$ times. How would this change affect the gravity o...
Over four and a half billion years ago, Theia, a rogue planet the size of Mars, slammed into the infant Earth. This impact is believed to have resulted in the birth of many things, from the moon t...
I am building a habitable, Earth like planet, but instead of it being in a solar system, it is inside a Nebula. The actual composition of the Nebula is uncertain at this point, but I am considerin...
I'm working on a planet wherein the dominant species isn't humanoid (in this case, mantids.) However, I'm unsure as to whether or not it'd make more logical sense for the dominant species to be co...
